How to Clean Sunbrella Fabric for 2026: Step-by-Step Guide

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If you've ever wondered how to clean Sunbrella fabric without ruining it, you're not alone. This material shows up on patio furniture, boat seats, awnings, and umbrellas everywhere, and most people assume it's nearly indestructible. It's tough, sure.

But even solution-dyed acrylic needs the right care to keep its color and water-repellent finish performing year after year.

The good news is that cleaning Sunbrella fabric is straightforward once you know what kind of mess you're dealing with. A light rinse handles everyday dust and pollen. Mildew needs a diluted bleach solution.

And tough stains like bird droppings or tree sap each call for their own approach. Match the method to the problem and you'll protect the fabric's finish, keep the maker's warranty intact, and get the longest life possible out of every cushion and awning you own.

Quick Answer

Clean Sunbrella fabric with mild dish soap and lukewarm water for routine maintenance. For mildew, use one cup of bleach per gallon of water. Always rinse thoroughly and air dry only.

Machine wash removable covers on a gentle cycle with cold water. Never use a heat dryer.

When a Simple Hose-Down Is Enough (Routine Light Cleaning)

Spring pollen, dust, light tree debris, and everyday grime are the easiest things to handle. If your Sunbrella cushions or awning don't have visible stains or mildew spots, a routine surface clean does the job nicely.

This takes about 15 minutes and costs next to nothing.

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Here's the basic process:

1. Brush off loose debris. Use a soft-bristle brush or a clean, dry cloth to sweep away loose dirt, pollen, and bugs. Always brush in one direction, following the fabric's grain.
2. Hose it down. Rinse the fabric thoroughly with a garden hose. Lukewarm water works best. This pre-wets the surface and looshes anything the brush missed.
3. Mix a mild cleaning solution. Add a quarter cup of mild dish soap (like Dawn Original) to a gallon of lukewarm water. Avoid soaps with added bleach, lotions, or degreasers.
4. Scrub gently. Dip a soft-bristle brush into the solution and work it into the fabric using light circular motions. Focus on high-traffic areas like seat cushions and armrests on furniture.
5. Rinse thoroughly. This step matters more than most people realize. Soap residue left in the fabric attracts new dirt faster. Rinse until the water runs completely clear.
6. Air dry. Let the fabric dry completely in open air. Partial sun is fine, but don't fold or store it while damp.

Do this once a month during heavy-use season and you'll rarely need anything more aggressive.

Deep Cleaning Removable Sunbrella Covers in the Washing Machine

If your cushion covers have zippers and are designed to come off, machine washing gives the deepest clean. Sunbrella's official care instructions support this, and it's one of the best ways to refresh fabric that's been through a full summer outdoors.

Check the care label first. If it says "remove cover and machine wash," you're good to go. If the fabric is sewn to the foam, skip this section and use the hand-cleaning method above instead.

Machine washing steps:

1. Pre-treat any visible stains. Spot-clean bird droppings, sap, or sunscreen marks before they go in the machine. Rub a small amount of mild soap into the stain and let it sit for five minutes.
2. Unzip and remove the cover. Shake it out over a trash can to dislodge crumbs, leaves, and pet hair.
3. Load the machine. Wash covers alone or with similar lightweight items. Don't overload the drum. Covers need room to move.
4. Use cold water on a gentle or delicate cycle. Add a small amount of mild liquid detergent. Skip the fabric softener entirely. It coats acrylic fibers and reduces water repellency. Do not use chlorine bleach on non-mildew stains.
5. Air dry only. This is the step where most people cause damage. Toss Sunbrella covers on a clothesline or drying rack. Never put them in a heat dryer. The acrylic fibers can shrink or warp, and you'll end up with covers that no longer fit their cushions.

If the fabric feels a little stiff after air drying, that's normal. The water-repellent finish tightens as it dries. It'll soften up once it's back on the furniture and gets some use.

If you're washing covers for the first time in a while, pair the job with a broader refresh of your outdoor textiles. For more on machine washing different fabric types safely, our guide to removing lint from clothes in the washing machine covers cycle settings that protect delicate materials.

Quick.settings reference:

How to Identify and Treat Mildew on Sunbrella Fabric

Mildew is the nemesis of outdoor fabric, and Sunbrella is mildew-resistant, which is not the same as mildew-proof. In humid climates, especially the Southeast US and Gulf Coast regions, mildew spores land on damp fabric and start colonizing fast. Left alone, they cause permanent dark spots and a musty smell that's tough to fully eliminate.

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Here's how to tell mildew from ordinary dirt:

• Appearance: Mildew shows up as gray, black, or dark green spots, usually in clusters. Dirt is more uniform and brown.
• Smell: Mildew has a distinctive musty odor, especially when the fabric is damp. Dirt smells like, well, dirt.
• Texture: Rub a hidden area. Dirt brushes away. Mildew sometimes smears or feels slightly slimy.
• Location: Mildew loves creases, folds, seams, and the underside of cushions where moisture lingers.

If you see black or gray speckles in the creases of your cushions, that's mildew. Don't panic. It rarely penetrates deep into solution-dyed acrylic fibers.

Bleach method (Sunbrella's recommended approach for confirmed mildew):

1. Mix one cup of household bleach with one gallon of lukewarm water.
2. Apply to affected areas using a soft-bristle brush.
3. Let the solution sit for 15 minutes. Don't let it dry on the fabric.
4. Rinse thoroughly with clean water until all bleach residue is gone.
5. Air dry completely.

Non-bleach alternative for light mildew or if you'd rather avoid chlorine:

1. Mix one cup of white distilled vinegar with one gallon of warm water.
2. Apply with a spray bottle and let it soak for 20 to 30 minutes.
3. Scrub gently with a soft brush.
4. Rinse thoroughly.
5. Air dry.

The vinegar method is milder and won't affect the fabric's fluorocarbon-free finish as aggressively. It works well for early-stage mildew or as a maintenance spray in humid zones.

Whatever you do, never mix bleach with vinegar, ammonia, or any other household cleaner. The chemical reaction produces toxic fumes.

If mildew has been sitting on your fabric for weeks or months, you may need to repeat the treatment. For a deeper look at how to remove mold from fabric furniture in situations where the problem goes beyond surface mildew, our dedicated guide walks through those scenarios step by step.

Bleach vs. Non-Bleach: Which Mildew Treatment Should You Use?

This is one of the most common questions Sunbrella owners ask, and the answer depends on the severity of the mildew and your personal comfort level with chlorine bleach.

Use diluted bleach when:

• Mildew covers a large area or is deeply set into seams and creases.
• You can see defined black or dark gray spots that didn't respond to soap and water.
• Your fabric is a lighter color where mildew staining is most visible.
• Humidity in your area makes mildew a recurring problem.

Skip bleach and use vinegar (or an enzyme-based cleaner) when:

• You're catching very early-stage mildew, light speckling without heavy growth.
• You want to protect the water-repellent finish as much as possible.
• The fabric is under warranty and you want to play it safe.
• You're cleaning in an enclosed space where bleach fumes are a concern.

A non-negotiable rule either way: always rinse the fabric completely after treatment. Bleach residue left in the fibers continues breaking down the acrylic and any protective coatings. This is one of the most common ways people accidentally shorten the life of their Sunbrella.

If you go the bleach route, stick to the one-cup-per-gallon ratio that Sunbrella recommends. Using it full strength will damage the fabric's finish, which may void your warranty. Per Sunbrella's official care instructions as of 2026, chlorine bleach is approved for solution-dyed acrylic when properly diluted, but it should never be used as part of a regular cleaning routine.

Save it for confirmed mildew only.

One practical tip: test your chosen solution on a hidden area first. Flip the cushion over or check the inside hem. Wait a few minutes and make sure there's no color change or texture damage before treating the full surface.

If you're caring for outdoor textiles more broadly, this kind of stain-identification thinking comes up a lot. Our guide to what fabric is lint free is useful background reading for understanding how different fibers respond to cleaning agents, which makes it easier to choose the right approach for any fabric you own.

Tough Stains That Need a Different Approach (Bird Droppings, Tree Sap, Sunscreen)

Not every mess is mildew, and some stains won't budge with mild soap alone. Here's how to deal with the three toughest outdoor fabric stains:

Bird dropping-s:

Bird excrement is acidic and can etch into fabric if it dries. Scrape off any solids with a plastic spatula or the edge of a credit card. Don't press it deeper into the fibers.

Mix a solution of mild dish soap and warm water, apply it to the stain, and let it soak for 15 minutes. Gently scrub with a soft brush, then rinse. If a shadow of the stain remains, spot-treat with the diluted bleach solution and soak for another 10 minutes before a final rinse.

Tree sap and pollen:

Pollen is easy. A damped cloth and mild soap will lift it. Sap is harder.

Apply a small amount of isopropyl rubbing alcohol (70%) to a clean cloth and dab the stain. Don't rub aggressively. The alcohol breaks down the sap without damaging the acrylic fibers.

Rinse the area well afterward. This method also works for tree tannin stains, those brown marks that drip from oak and maple branches.

Sunscreen residue:

This one catches people off guard. Oxybenzone and avobenzone in chemical sunscreen bond to acrylic fabric and create yellowish-brown stains that get worse over time with sun exposure. The fix is to pretreat the stained area with a small amount of non-acetone dishwashing liquid.

Work it in gently, let it sit for 10 minutes, then rinse. For set-in sunscreen stains, an enzyme-based fabric cleaner works better than standard soap. Apply per the product's instructions, rinse well, and air dry.

For all tough stains, the sooner you act, the better your results. Letting bird droppings or sunscreen bake into the fabric in direct sun makes removal significantly harder.

Cleaning Sunbrella Awnings, Umbrellas, and Fixed Upholstery On-Site

Not every piece of Sunbrella fabric comes off for a bath. Awnings, market umbrellas, and boat upholstery are fixed in place, so you clean them where they sit. The good news is that the same cleaning principles apply.

You just need to work in sections and mind your ladder safety.

For retractable awnings:

Extend the awning fully so you can reach every part of the fabric. Start by brushing off loose debris with a long-handled soft brush. Hose down the entire surface.

Then work from top to bottom with your soap solution, scrubbing one section at a time and rinsing before the soap dries. Avoid pressure washers on awnings. The high-pressure stream can force water into the frame and roller mechanism, which causes rust and mechanical problems down the line.

Retract the awning only after the fabric is completely dry. Rolling up damp fabric traps moisture against itself. That's a fast track to mildew on the inside folds.

For market umbrellas:

Close the umbrella and lay it flat if possible, or lean it against a wall at an angle. Brush, soap, scrub, and rinse the same way you would a cushion. Pay extra attention to the umbrella's peak and the rib channels where water and debris collect.

Open the umbrella and let it dry fully in the sun before closing it back up.

If you need to replace a worn umbrella or awning cover entirely, our guide to how to change RV awning fabric walks through the removal and reinstallation process in detail. The same logic applies to most fixed outdoor fabric installations.

If you notice the umbrella fabric pilling or developing a rough texture from age and UV exposure, a fabric shaver can help smooth the surface before you clean it, making the soap and rinse process more effective.

Cushion Foam and What's Hiding Underneath the Fabric

Pull the cover off a Sunbrella cushion after a wet summer and you might find a surprise. Foam absorbs water, and if it stays damp for long, mold starts growing underneath where you can't see it. Cleaning the fabric cover is only half the job.

After removing the covers, inspect the foam inside. Press it firmly with your palm. If cool moisture comes up, the foam needs to dry out.

Stand the cushion upright in a well-ventilated area or set it outside in partial sunlight. Flip it every few hours so both sides air out. This can take a full day or more in humid conditions.

If you spot dark spots or smell mustiness from the foam itself, mix a solution of one part white vinegar and three parts water. Lightly mist the surface of the foam. Don't soak it.

Vinegar kills surface mold spores naturally. Let the foam dry completely in open air before putting the clean cover back on.

When to replace the foam instead of trying to clean it:

• It crumbles or breaks apart when pressed.
• A strong musty smell persists after two rounds of vinegar treatment and thorough drying.
• Visible mold covers more than a small patch and is embedded deep into the surface.

Damp foam also attracts insects.mites and silverfish love moist, dark spaces. Storing cushions with wet foam is one of the most common ways people ruin a set of outdoor furniture over winter.

Quick foam care summary:

• Always remove covers and air out foam after heavy rain or before storing.
• Store cushions upright, not stacked flat, so air circulates.
• In humid climates, consider storing foam and covers separately to reduce trapped moisture.

If you're refreshing stored textiles of any kind, how to remove lint from towels in the washing machine is a useful companion read that covers best practices for reviving fabrics that have been in storage.

Common Mistakes That Damage Sunbrella Faster Than Dirt Does

Sunbrella is durable, but certain cleaning habits will shorten its life. Here are the ones that show up most often:

Using undiluted bleach. Straight chlorine bleach breaks down the water-repellent finish and can weaken the fabric's structure over time. Always dilute it, one cup per gallon of water, and only use it for confirmed mildew.

Tossing covers in a hot dryer. Heat shrinks solution-dyed acrylic fibers. If your covers never fit quite right after washing, this is almost certainly why. Air dry every time.

Scrubbing with a stiff or wire brush. Sunbrella's surface coating is tough but not indestructible. A stiff brush scratches the finish and opens the weave, letting in more dirt and moisture. Stick to soft-bristle brushes only.

Using fabric softener. It sounds harmless. It coats the fibers and blocks the breathable, water-repellent finish that makes Sunbrella work the way it does. Skip it entirely.

Pressure washing at close range. A garden hose from six feet away is fine. A pressure washer from two inches is not. It drives grime into the weave and can cause micro-tears in the fabric, especially on older awnings and boat covers.

Skipping the rinse. Soap that dries in the fabric acts like a dirt magnet. Your cushions will look dirtier a week after cleaning than they did before. Rinse until the water runs clear.

No shortcuts here.

Storing while damp. This one deserves its own highlight. Putting covers on wet foam, closing a damp umbrella, or rolling up an awning that's still slightly moist will cause mildew faster than anything else. Patience pays off.

Let every surface dry completely before it goes away.

Step-by-Step Cleaning Checklist

Here's a condensed reference you can follow or print for the next cleaning day.

Routine Light Clean (monthly as needed):

1. Brush off loose debris with a soft-bristle brush
2. Rinse with a garden hose using lukewarm water
3. Scrub with mild dish soap solution (1/4 cup per gallon)
4. Rinse thoroughly until water runs clear
5. Air dry completely before use or storage

Deep Clean with Machine Wash (one to two times per year):

1. Remove zippered covers
2. Pre-treat visible stains
3. Machine wash on gentle cycle, cold water, mild detergent only
4. Air dry only, no heat
5. Inspect foam, air out if damp
6. Reinstall covers once everything is fully dry

Mildew Treatment (as needed):

1. Confirm mildew by smell and appearance
2. Apply diluted bleach solution (1 cup per gallon) or vinegar alternative
3. Soak for 15 minutes without letting it dry out
4. Scrub gently with a soft-bristle brush
5. Rinse thoroughly
6. Air dry completely

Don't forget: proper maintenance goes beyond cleaning. For advice on caring for delicate fabrics and outdoor textiles in general, our complete guide to using a fabric shaver covers surface maintenance techniques that keep fabrics looking fresh between deep cleans.

When to Call a Professional vs. Handling It Yourself

Most Sunbrella cleaning is a straightforward DIY job. But there are situations where a professional service makes more sense.

Call a pro when:

• The fabric is part of a large commercial awning installation with hydraulic mechanisms you don't want to risk damaging.
• Mildew has spread across the entire surface and multiple home treatments haven't resolved it.
• The fabric has specialty coatings (fire-retardant treatments, commercial-grade water barriers) that require specific cleaning agents.
• You're dealing with a large-scale project, like cleaning all the seating for a restaurant patio, and need it done fast without disrupting business.

Handle it yourself when:

• You're cleaning residential cushions, umbrellas, or a single awning.
• The problem is surface dirt, pollen, or light mildew.
• You have a weekend and a garden hose.
• The covers are removable and machine washable.

Professional cleaning for outdoor Sunbrella fabric typically runs $5 to $10 per square foot for awnings and $30 to $75 per cushion for deep cleaning, depending on your area. For most homeowners, the DIY approach saves money and works just as well for routine maintenance.

If your cushions have developed heavy surface pilling from years of use and sun exposure, our guide to getting fuzz off a sweater covers gentle fiber-removal techniques that also work on heavily worn outdoor fabric surfaces before you deep clean.

One cost-effective trick: after a deep clean, apply a fabric protectant spray designed for solution-dyed acrylic. Products like SUNGUARD Fabric Protectant restore the water-repellent layer and help the fabric resist new stains for several months. It adds a few dollars to the project but can double the time between deep cleans.

Storing Sunbrella Fabric for the Off-Season (So It's Clean When You Uncover It)

Seasonal storage is where a lot of Sunbrella fabric goes wrong. People toss damp cushions into a shed in October and pull out mildewed covers in April. A few minutes of prep prevents months of frustration.

Before you store anything:

1. Give every piece a full cleaning using the routine or deep-clean method above.
2. Let everything dry completely. This can take 24 to 48 hours in low-humidity conditions.
3. Brush the fabric one final time once dry to remove any remaining dust.

Storage best practices:

• Store in a cool, dry, ventilated space. A garage with some airflow works. A sealed plastic tub in a hot attic does not.
• Use breathable storage bags. Cotton or mesh bags let air circulate. Trap-moisture plastic bins are the enemy.
• Store cushions upright or flat, never compressed. Crushing the foam damages its structure and creates creases where moisture pools.
• Don't stack heavy items on top of stored fabric cushions. The pressure can create permanent indentations in the foam.
• For awnings, retract and cover with a breathable awning cover. This protects from UV and debris while still allowing airflow.

Marine and boat owners: if your boat will sit in the water with covers on through winter, make sure all fabrics are bone dry before cinching straps tight. A loose-fitting breathable cover over the Sunbrella protects it from ice and snow while allowing trapped moisture to escape.

If you're packing away seasonally stored fabrics and notice pilling or fuzz on other textiles in your home, how to get rid of lint on blankets is a quick read that shares techniques for prepping any fabric before long-term storage.

Frequently Asked Questions

Can I use a pressure washer on Sunbrella fabric?

You can, but it's not recommended. If you do, keep the nozzle at least two feet from the fabric surface and use a wide-spray tip. A garden hose with moderate pressure accomplishes the same task without the risk of driving dirt into the weave or damaging the finish.

How often should I clean Sunbrella cushions?

Monthly light cleaning during active use season keeps things fresh. A full deep clean, either by hand or machine, once or twice a year is enough for most residential setups. In coastal or humid areas, increase the frequency slightly.

Will bleach ruin Sunbrella fabric?

Not if it's diluted properly. Chlorine bleach at the recommended ratio of one cup per gallon of water is approved by Sunbrella for mildew treatment. Using it full strength or too frequently will degrade the water-repellent finish and can weaken the fabric over time.

Can Sunbrella fabric go in the dryer?

No. Always air dry Sunbrella fabric. Heat from a tumble dryer can shrink and warp the covers, making them impossible to fit back over the cushion foam.

What's the best soap for cleaning Sunbrella?

A mild liquid dish soap like Dawn Original works perfectly. Avoid soaps with added bleach, moisturizers, strong fragrances, or degreasing additives. These can leave residue or affect the stain-resistant finish.

How do I know if it's mildew or just dirt?

Mildew appears as gray, black, or dark green spots, often in clusters, and has a musty smell. Dirt is usually brown, uniform in color, and brushes or rinses away easily without odor.

Does cleaning Sunbrella void the warranty?

Routine cleaning with mild soap and diluted bleach, as described in Sunbrella's official care instructions, does not affect the warranty. Damage caused by improper cleaning methods, such as undiluted bleach, harsh solvents, or commercial dry cleaning, is not covered.

Mistakes to Avoid

The common pitfalls we've already covered all apply here: using undiluted bleach, skipping thorough rinsing, skipping the rinse, and pressure washing too close. These are the alerts you need to keep in mind. If you've ever noticed that your clean Sunbrella cushion started looking grimy a week later, that's likely soap residue.

One mistake that appears in marine settings: storing a boat with Sunbrella covers still wet from fresh water or rain. The fabric needs to dry completely before tying down retention straps. A snug cover over a damp surface creates just enough atmospheric pressure to trap moisture in the folds.

Another is using household laundry detergent. Unless it's a color-safe, non-scented formula, these contain optical brighteners and additives that leave a thin film on acrylic fibers. Over time, that film blocks the breathable layer and reduces water repellency.

Finally, never mix vinegar and bleach. The resulting gas is harmful and could damage your eyes or lungs if you're not in a well-ventilated area.

Step-by-Step Cleaning Checklist

Routine Light Clean (monthly as needed)

1. Brush off loose debris with a soft-bristle brush
2. Rinse with a garden hose using lukewarm water
3. Scrub with mild dish soap solution (1/4 cup per gallon)
4. Rinse thoroughly until water runs clear
5. Air dry completely before use or storage

Deep Clean with Machine Wash (one to two times per year)

1. Remove zippered covers
2. Pre-treat visible stains
3. Machine wash on gentle cycle, cold water, mild detergent only
4. Air dry only, no heat
5. Inspect foam, air out if damp
6. Reinstall covers once everything is fully dry

Mildew Treatment (as needed)

1. Confirm mildew by smell and appearance
2. Apply diluted bleach solution (1 cup per gallon) or vinegar alternative
3. Soak for 15 minutes without letting it dry out
4. Scrub gently with a soft-bristle brush
5. Rinse thoroughly
6. Air dry completely

When to Call a Professional vs. Handling It Yourself

Most Sunbrella cleaning is a straightforward DIY job. But there are situations where a professional service makes more sense.

Call a pro when:

• The fabric is part of a large commercial awning installation with hydraulic mechanisms you don't want to risk damaging.
• Mildew has spread across the entire surface and multiple home treatments haven't resolved it.
• The fabric has specialty coatings (fire-retardant treatments, commercial-grade water barriers) that require specific cleaning agents.

Handle it yourself when:

• You're cleaning residential cushions, umbrellas, or a single awning.
• The problem is surface dirt, pollen, or light mildew.
• You have a weekend and a garden hose.

Professional cleaning for outdoor Sunbrella fabric typically runs $5 to $10 per square foot for awnings and $30 to $75 per cushion for deep cleaning, depending on your area.

One cost-effective trick: after a deep clean, apply a fabric protectant spray designed for solution-dyed acrylic. Products like SUNGUARD Fabric Protectant restore the water-repellent layer and help the fabric resist new stains for several months. It adds a few dollars to the project but can double the time between deep cleans.

Storing Sunbrella Fabric for the Off-Season

Seasonal storage is where a lot of Sunbrella fabric goes wrong. People toss damp cushions into a shed in October and pull out mildewed covers in April. A few minutes of prep prevents months of frustration.

Before you store anything:

1. Give every piece a full cleaning using the routine or deep-clean method.
2. Let everything dry completely. This can take 24 to 48 hours in low-humidity conditions.
3. Brush the fabric one final time once dry to remove any remaining dust.

Storage best practices:

• Store in a cool, dry, ventilated space. A garage with some airflow works.
• Use breathable storage bags. Cotton or mesh bags let air circulate.
• Store cushions upright or flat, never compressed.
• Don't stack heavy items on top of stored fabric cushions.
• For awnings, retract and cover with a breathable awning cover.

Marine and boat owners: if your boat will sit in the water with covers on through winter, make sure all fabrics are bone dry before cinching straps tight. A loose-fitting breathable cover over the Sunbrella protects it from ice and snow while allowing trapped moisture to escape.

How Often Should You Actually Clean Sunbrella?

Monthly light cleaning during heavy-use season keeps things fresh. A full deep clean, either by hand or machine, once or twice a year is enough for most residential setups. In coastal or humid areas, increase the frequency slightly.

If you're caring for outdoor textiles more broadly, this kind of stain-identification thinking comes up a lot. Our guide to what fabric is lint free is useful background reading for understanding how different fibers respond to cleaning agents, which makes it easier to choose the right approach for any fabric you own.

Frequently Asked Questions

Can I use a pressure washer on Sunbrella fabric?

You can, but it's not recommended. If you do, keep the nozzle at least two feet from the fabric surface and use a wide-spray tip. A garden hose with moderate pressure accomplishes the same task without the risk of driving dirt into the weave or damaging the finish.

How often should I clean Sunbrella cushions?

Monthly light cleaning during active use season keeps things fresh. A full deep clean, either by hand or machine, once or twice a year is enough for most residential setups. In coastal or humid areas, increase the frequency slightly.

Will bleach ruin Sunbrella fabric?

Not if it's diluted properly. Chlorine bleach at the recommended ratio of one cup per gallon of water is approved by Sunbrella for mildew treatment. Using it full strength or too frequently will degrade the water-repellent finish and can weaken the fabric over time.

Can Sunbrella fabric go in the dryer?

No. Always air dry Sunbrella fabric. Heat from a tumble dryer can shrink and warp the covers, making them impossible to fit back over the cushion foam.

What's the best soap for cleaning Sunbrella?

A mild liquid dish soap like Dawn Original works perfectly. Avoid soaps with added bleach, moisturizers, strong fragrances, or degreasing additives. These can leave residue or affect the stain-resistant finish.

How do I know if it's mildew or just dirt?

Mildew appears as gray, black, or dark green spots, often in clusters, and has a musty smell. Dirt is usually brown, uniform in color, and brushes or rinses away easily without odor.

Does cleaning Sunbrella void the warranty?

Routine cleaning with mild soap and diluted bleach, as described in Sunbrella's official care instructions, does not affect the warranty. Damage caused by improper cleaning methods, such as undiluted bleach, harsh solvents, or commercial dry cleaning, is not covered.